Catylatic

[GMC Sierra]

how is the best way to reinstall your cat after you hollow it out?
i want my truck to be louder but still look like it has a cat so i was going to hollow it out but just didn't know how to reistall it. yes i know to weld it but how to seem it:ford:

[vic_V8]

hollow cats sound like ****, make sure their is a pipe in there.